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22 comet jupiter impact Comet-Jupiter Impact:  A passing comet, captured by the Jovian system, collides with the massive planet.  Lightning is observed briefly following the event, in the gas giant's dynamic atmosphere.  27 seconds
23 comet formation Comet-Formation:  First viewed through the coma, a comet's nucleus tumbles toward the Sun.   As it recedes from the observer and nears the Sun, the dust and plasma tails begin to form.  60 seconds
24 star birth Star Birth:  The accumulation of dust and gas (known as accretion) occurs within the heart of a nebula and a star is born.  22 seconds
25 asteroid strike Asteroid Strike:   An asteroid strikes the eastern Mediterranean Sea.  Such marine impacts can cause tsunamis.  17 seconds
26 asteroid collision Asteroid Collision:   Several recent incidents indicate that collisions among asteroids may not be uncommon.  18 seconds
small saturn passage Saturn Passage: A flyby of the ringed world Saturn, briefly passing through its ring system. 25 seconds
small saturn ring passage Saturn Ring Passage: A close encounter with the debris which forms Saturn's ring system. 31 seconds
Click on images to view sample Quicktime movies of each sequence
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